Nothing happens on start - Page 3 - Honda RC51 Forum : RC51 Motorcycle Forums
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post #21 of 27 (permalink) Old 07-26-2019, 04:55 AM
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Originally Posted by Wibbly View Post
It opens the positive. But yes.


The common to the start button is from the headlight fuse

The normally closed contact feeds the headlights (both the low beam directly and the high beam relay)



The normally open feeds the positive to the starter relay
Useful, thanks.
I was considering adding the second low beam but based on the above this would require a relay.
That doesn't put me off, but I rarely ride at night and tbh the single low beam works well enough.

I'll get it done at some stage.

It's not falling off, it's an upgrade opportunity
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post #22 of 27 (permalink) Old 07-30-2019, 03:23 AM Thread Starter
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UPDATE:

So found the no starting culprit. The wires from the indicator unit that plugs into the clutch switch was cut by someone and taped together. I know right.... So i fixed it adn plugged it into the clutch switch.
Now the bike starts BUT you have to keep the clutch lever pulled in for it to start. Not pressing it in nothing happens as before. SO i'm thinking the side stand switch may be faulty, forcing me to hold in the clutch when starting.
I'll ride her like this for now, no biggie and see if i can replace the side stand switch at a later stage.

Next up is fixing the flickering neutral light and first and foremost see why the indicators are not getting any power. It looks like the ground wire to the plug that plugs into the flasher unit is broken off, so that is my first fix.
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post #23 of 27 (permalink) Old 07-30-2019, 01:51 PM
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The clutch switch depends on the kickstand switch to start the bike. If the clutch switch works to start the bine the kickstand switch is good.


The neutral switch is what provides the ground to the starter relay normally.

If the neutral switch is flaky (flashing neutral light you describe) it could be a loose or corroded wire or the switch itself.


If fixing the neutral switch doesn't fix the starting issue, then it could be the diode in your fusebox.
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post #24 of 27 (permalink) Old 07-31-2019, 03:51 AM Thread Starter
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Ok ill see where the neutral switch is situated. Also the diode, is this something i can buy off the shelf and not just from Honda?

Then if i may the indicators are still not doing anything. The plug that goes into the flash unit, the ground wire it looks like has broken off so i cut the other tow off and I've shorted the ground wire with one of the wires and nothing when flicking the turn signal switch so im thinking its the turn signal switch that is faulty. It should at least have one of the indicators lighting up, not flashing but stay on, but it doesnt.
Also i think the horn is on the same wiring line as the indicators as this is also now not working.


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Originally Posted by Wibbly View Post
The clutch switch depends on the kickstand switch to start the bike. If the clutch switch works to start the bine the kickstand switch is good.


The neutral switch is what provides the ground to the starter relay normally.

If the neutral switch is flaky (flashing neutral light you describe) it could be a loose or corroded wire or the switch itself.


If fixing the neutral switch doesn't fix the starting issue, then it could be the diode in your fusebox.
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post #25 of 27 (permalink) Old 07-31-2019, 11:49 AM
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The white/green feeds the horn, turn signals, and tail light.


After the turn signal relay the indicators are on a grey wire. After the switch they are on orange and blue

Check for 12v on the white/green. If you don't have a multi meter you should have bought one 9 days ago when you started this. It's very difficult for someone like me to tell you everything to do only for you to do essentially no testing yourself.


The diode isn't something you can buy wherever. It plugs into the fusebox.

Last edited by Wibbly; 07-31-2019 at 11:51 AM.
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post #26 of 27 (permalink) Old 08-01-2019, 03:35 AM Thread Starter
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Hi Wobbly...

First off thank you again for helping... That being said.

below comment is not warranted, as i have a few times told you that i use a multimeter, (see just first page alone, i highlighted where i mentioned using one) and i do try what you suggest and not just sit back and let you or anyone else solved my issue. I've actually did a rebuild on my Kawasaki ZXR750H1 years ago, im not a electrical specialist...

But no worries, im done with this forum...

Later...


Quote:
Originally Posted by Wibbly View Post
The white/green feeds the horn, turn signals, and tail light.


After the turn signal relay the indicators are on a grey wire. After the switch they are on orange and blue

Check for 12v on the white/green. If you don't have a multi meter you should have bought one 9 days ago when you started this. It's very difficult for someone like me to tell you everything to do only for you to do essentially no testing yourself.


The diode isn't something you can buy wherever. It plugs into the fusebox.
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post #27 of 27 (permalink) Old 08-01-2019, 11:32 AM
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You're being pretty sensitive

I'm the only one here who offered any help. And have spent a huge amount of time holding your hand through this.


If you want to call me the asshole and go it alone that's all you. But honestly all you have to do is check for voltage in all the places that things don't work. Ive spent over a week on this with you for something that in real life would be a 15 minute fix.
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